Re: dates in functions

Salvador Mainé wrote:

> Hello:
>
> I'm trying to define a function that, given a date, returns its month.
> The definition is as follows:
>
> CREATE function anyo_hidro (date) returns int AS '
> BEGIN
> RETURN date_part("month",$1);
> END;
> ' LANGUAGE 'plpgsql';
>
> But when I do:
>
> select anyo_hidro('1-1-1999');
>
> I get the following error:
>
> ERROR: Attribute 'month' not found

Try,

test=# CREATE function anyo_hidro (date) returns int AS '
BEGIN
RETURN date_part(\'month\',$1::datetime);
END;
' LANGUAGE 'plpgsql';

CREATE
test=# select anyo_hidro('1-1-1999');
anyo_hidro
------------
1
(1 row)

I use:

test=# select version();
version
---------------------------------------------------------------
PostgreSQL 7.0.3 on i686-pc-linux-gnu, compiled by gcc 2.95.3
(1 row)

test=#

George Moga,
Data Systems Srl